Simple 8x8 LED Matrix controller which interfaces with a Processing GUI over serial to display sketches
Dependencies: Multi_WS2811 mbed
Fork of Multi_WS2811_test by
main.cpp@23:33df42ff2541, 2014-01-02 (annotated)
- Committer:
- bikeNomad
- Date:
- Thu Jan 02 10:30:25 2014 +0000
- Revision:
- 23:33df42ff2541
- Parent:
- 22:abfed71656bd
- Child:
- 24:feb1dae0403a
smoothed animation; added frames/sec count (now at 341 for rainbow)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bikeNomad | 22:abfed71656bd | 1 | #include "mbed.h" |
bikeNomad | 22:abfed71656bd | 2 | #include "WS2811.h" |
bikeNomad | 22:abfed71656bd | 3 | #include "Colors.h" |
bikeNomad | 22:abfed71656bd | 4 | |
bikeNomad | 23:33df42ff2541 | 5 | // per LED: 3 * 20 mA = 60mA max |
bikeNomad | 23:33df42ff2541 | 6 | // 60 LEDs: 60 * 60mA = 3600 mA max |
bikeNomad | 22:abfed71656bd | 7 | unsigned const nLEDs = MAX_LEDS_PER_STRIP; |
bikeNomad | 22:abfed71656bd | 8 | |
bikeNomad | 22:abfed71656bd | 9 | // I/O pin usage |
bikeNomad | 22:abfed71656bd | 10 | // PTD0 TPM0 CH0 monitor |
bikeNomad | 22:abfed71656bd | 11 | // PTD1 TPM0 CH1 monitor |
bikeNomad | 22:abfed71656bd | 12 | // PTD2 data output |
bikeNomad | 22:abfed71656bd | 13 | // PTD3 debug output |
bikeNomad | 22:abfed71656bd | 14 | |
bikeNomad | 22:abfed71656bd | 15 | unsigned const DATA_OUT_PIN = 2; // PTD2 |
bikeNomad | 22:abfed71656bd | 16 | |
bikeNomad | 22:abfed71656bd | 17 | Serial pc(USBTX, USBRX); |
bikeNomad | 22:abfed71656bd | 18 | |
bikeNomad | 22:abfed71656bd | 19 | // @brief sets different colors in each of the LEDs of a strip |
bikeNomad | 22:abfed71656bd | 20 | // @param strip the light strip |
bikeNomad | 22:abfed71656bd | 21 | // @param sat saturation, 0.0 - 1.0 |
bikeNomad | 22:abfed71656bd | 22 | // @param brite brightness, 0.0 - 1.0 |
bikeNomad | 22:abfed71656bd | 23 | // @param hueShift shift, 0.0 - 1.0 is equivalent to 0 - 360 degrees |
bikeNomad | 22:abfed71656bd | 24 | static void showRainbow(WS2811 &strip, float sat, float brite, float hueShift) |
bikeNomad | 22:abfed71656bd | 25 | { |
bikeNomad | 22:abfed71656bd | 26 | unsigned nLEDs = strip.numPixels(); |
bikeNomad | 22:abfed71656bd | 27 | for (unsigned i = 0; i < nLEDs; i++) { |
bikeNomad | 22:abfed71656bd | 28 | uint8_t r, g, b; |
bikeNomad | 22:abfed71656bd | 29 | float hue = ((float)i / (float)nLEDs) + hueShift; |
bikeNomad | 22:abfed71656bd | 30 | HSBtoRGB(hue, sat, brite, &r, &g, &b); |
bikeNomad | 22:abfed71656bd | 31 | strip.setPixelColor(i, LedStrip::Color(r, g, b)); |
bikeNomad | 22:abfed71656bd | 32 | } |
bikeNomad | 22:abfed71656bd | 33 | strip.show(); |
bikeNomad | 22:abfed71656bd | 34 | } |
bikeNomad | 20:b9d76e567637 | 35 | |
bikeNomad | 22:abfed71656bd | 36 | int main(void) |
bikeNomad | 22:abfed71656bd | 37 | { |
bikeNomad | 22:abfed71656bd | 38 | pc.baud(115200); |
bikeNomad | 22:abfed71656bd | 39 | WS2811 lightStrip(nLEDs, DATA_OUT_PIN); |
bikeNomad | 22:abfed71656bd | 40 | |
bikeNomad | 22:abfed71656bd | 41 | lightStrip.begin(); |
bikeNomad | 22:abfed71656bd | 42 | |
bikeNomad | 23:33df42ff2541 | 43 | float brite = 0.2; // 1.0 is full brightness, which is VERY bright! |
bikeNomad | 23:33df42ff2541 | 44 | float rainbowPeriod = 1 * 1.0e6; // usec |
bikeNomad | 23:33df42ff2541 | 45 | float sat = 1.0; |
bikeNomad | 22:abfed71656bd | 46 | |
bikeNomad | 23:33df42ff2541 | 47 | Timer timeRunning; |
bikeNomad | 23:33df42ff2541 | 48 | timeRunning.start(); |
bikeNomad | 23:33df42ff2541 | 49 | bool printed = false; |
bikeNomad | 23:33df42ff2541 | 50 | unsigned frames = 0; |
bikeNomad | 22:abfed71656bd | 51 | |
bikeNomad | 22:abfed71656bd | 52 | for (;;) { |
bikeNomad | 23:33df42ff2541 | 53 | unsigned running = timeRunning.read_us(); |
bikeNomad | 23:33df42ff2541 | 54 | float hueShift = running / rainbowPeriod; |
bikeNomad | 23:33df42ff2541 | 55 | if (!printed && running >= 10000000U) { |
bikeNomad | 23:33df42ff2541 | 56 | pc.printf("%u frames in %u usec = %u frames / sec\r\n", frames, running, frames * 1000000 / running); |
bikeNomad | 23:33df42ff2541 | 57 | printed = true; |
bikeNomad | 23:33df42ff2541 | 58 | } |
bikeNomad | 22:abfed71656bd | 59 | showRainbow(lightStrip, sat, brite, hueShift); |
bikeNomad | 23:33df42ff2541 | 60 | frames ++; |
bikeNomad | 23:33df42ff2541 | 61 | } |
bikeNomad | 22:abfed71656bd | 62 | } |
bikeNomad | 22:abfed71656bd | 63 |